Opko Health Inc. (NASDAQ:OPK) is one of the best stocks under $5 with highest upside potential. ModeX Therapeutics Inc., an Opko Health Inc. (NASDAQ:OPK) company, announced on October 29 a license and collaboration agreement with Regeneron Pharmaceuticals Inc. for the development and discovery of multispecific antibodies for a number of therapeutic indications of mutual interest. Is Opko Health Inc. (OPK) the Best Nasdaq Stock Under $5 to Buy? Management reported that the collaboration will “apply ModeX’ ...